| 词条 | Caladenia paludosa |
| 释义 |
| name = Swamp spider orchid | image = Caladenia paludosa 01.jpg | image_caption = Caladenia paludosa growing in the Jandakot Regional Park | genus = Caladenia | species = paludosa | authority = Hopper & A.P.Br.[1] | synonyms =
}} Caladenia paludosa, commonly known as the swamp spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single erect, hairy leaf and up to three red, greenish-yellow and cream-coloured flowers. It mostly grows in dense scrub and is one of the last of the similar spider orchids to flower. DescriptionCaladenia paludosa is a terrestrial, perennial, deciduous, herb with an underground tuber. It has a single erect, hairy leaf, {{convert|100-300|mm|in|sigfig=1|abbr=on}} long and {{convert|5-15|mm|in|sigfig=1|abbr=on}} wide. Up to three red, greenish-yellow and cream-coloured flowers {{convert|30-50|mm|in|sigfig=1|abbr=on}} long and {{convert|50-80|mm|in|sigfig=1|abbr=on}} wide are borne on a stalk {{convert|300-500|mm|in|sigfig=1|abbr=on}} tall. The sepals have thick, brown, club-like glandular tips {{convert|10-25|mm|in|sigfig=1|abbr=on}} long. The dorsal sepal is erect, {{convert|35-60|mm|in|sigfig=1|abbr=on}} long and {{convert|3-5|mm|in|sigfig=1|abbr=on}} wide. The lateral sepals are {{convert|35-60|mm|in|sigfig=1|abbr=on}} long and {{convert|4-5|mm|in|sigfig=2|abbr=on}} wide and curve stiffly downwards. The petals are {{convert|30-45|mm|in|sigfig=1|abbr=on}} long, {{convert|2-4|mm|in|sigfig=1|abbr=on}} wide and curve upwards. The labellum is {{convert|7-25|mm|in|sigfig=1|abbr=on}} long, {{convert|8-16|mm|in|sigfig=1|abbr=on}} wide and greenish-yellow with a glossy red tip which curls downwards. The sides of the labellum have linear teeth up to {{convert|5|mm|in|sigfig=1|abbr=on}} long and there are four widely-spaced pale or deep red calli along its mid-line. Flowering occurs from September to early December.[1][2][3]Taxonomy and namingCaladenia paludosa was first described in 2001 by Stephen Hopper and Andrew Phillip Brown from a specimen collected near Bunbury and the description was published in Nuytsia.[4] The specific epithet (paludosa) is a Latin word meaning "swampy" or "marshy"[5] referring to the winter-wet swamps where this species grows.[2]Distribution and habitatThe swamp spider orchid is found on the coastal plain between Gingin and Gracetown in the Jarrah Forest, Mallee, Swan Coastal Plain and Warren biogeographic regions. It grows in thick scrubland which is swampy in winter.[1][2][3][6] ConservationCaladenia paludosa is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.[6]References1. ^1 {{cite book|last1=Jones|first1=David L.|title=A complete guide to native orchids of Australia including the island territories|date=2006|publisher=New Holland|location=Frenchs Forest, N.S.W.|isbn=1877069124|pages =73–74}} {{Taxonbar|from=Q3079964}}2. ^1 2 {{cite book|last1=Brown|first1=Andrew|last2=Dundas|first2=Pat|last3=Dixon|first3=Kingsley|last4=Hopper|first4=Stephen|title=Orchids of Western Australia|date=2008|publisher=University of Western Australia Press|location=Crawley, Western Australia|isbn=9780980296457|page=105}} 3. ^1 {{cite book|last1=Hoffman|first1=Noel|last2=Brown|first2=Andrew|title=Orchids of South-West Australia|date=2011|publisher=Noel Hoffman|location=Gooseberry Hill|isbn=9780646562322|page=129|edition=3rd}} 4. ^1 {{cite web|title=Caladenia paludosa|url=https://id.biodiversity.org.au/instance/apni/574124|publisher=APNI|accessdate=28 February 2017}} 5. ^{{cite book|last1=Brown|first1=Roland Wilbur|title=The Composition of Scientific Words|date=1956|publisher=Smithsonian Institution Press|location=Washington, D.C.|page=514}} 6. ^1 {{FloraBase|name=Caladenia paludosa|id=15503}} 6 : Caladenia|Endemic orchids of Australia|Orchids of Western Australia|Plants described in 2001|Endemic flora of Western Australia|Taxa named by Andrew Phillip Brown |
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